Quoting AKS♥:" We're cutting my DS a cake tomorrow (his 4th birthday was Thursday). We're going to dinner with immediate ... [snip!] ... until tomorrow..DH says to freeze it then let it defrost in the morning..I think leaving out will be fine..what should I do?"Just in the refrigerator for a day should be fine, if it was a week plus I'd say freeze it.
Quoting JiLLiAN.:" what kind of cake? i usually put them in the fridge if they have whipped cream frosting and/or filling."
Quoting AKS♥:" It's just a vanilla cake with red buttercream frosting"for butter-cream I would refrigerate it for sure!